Fix Vimeo instantiation error catching

[rijk]

Errors happening during instantiation of the Vimeo player (for example: a private video or 404) were not caught and passed to the error handler. This resulted in a bunch of console errors (triggered by the this.player.on(...) calls after instantiation), a broken player, and no way to do anything about it or even tell the user what is going on.

This change calls player.ready() right after instantiation (which returns a promise), allowing us to check if everything is OK (in which case we attach all the listeners), or not (in which case we pass the error on to our onError method).

More info: vimeo/player.js#165

[cookpete]

d34d228 should fix this, but there is still a bug with the Vimeo API that renders the player useless after the initial error occurs: vimeo/player.js#166.

Thanks for the PR!